Help patching leaky shutoff valve!

[AaronMakDonald]

I need help patching a leaky shut-off valve for the floor radiator in my apartment. I live in a large building and cannot contact building maintenance at the moment or isolate the line as it goes to the apartment next door. I tried patching it with gorilla tape with no success. The valve itself isn't leaking but the two ends that attach to the piping are. The leak is pretty bad and I'm not sure to patch it. Again I can't shutoff the water in the line or contact maintenance to replace it for the time being so aside from putting a tray underneath it I'm not sure what to do. Does anyone have any advice on how to patch this? Any help would be greatly appreciated.

Thanks.